4242250004221 has 8 divisors (see below), whose sum is σ = 4249906947000. Its totient is φ = 4234593768960.

The previous prime is 4242250004159. The next prime is 4242250004269. The reversal of 4242250004221 is 1224000522424.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2769944419225 + 1472305584996 = 1664315^2 + 1213386^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4242250004221 - 2³¹ = 4240102520573 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4242250004221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242250004021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12665061 + ... + 12995701.

It is an arithmetic number, because the mean of its divisors is an integer number (531238368375).

Almost surely, 2^{4242250004221} is an apocalyptic number.

It is an amenable number.

4242250004221 is a deficient number, since it is larger than the sum of its proper divisors (7656942779).

4242250004221 is a wasteful number, since it uses less digits than its factorization.

4242250004221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353759.

The product of its (nonzero) digits is 10240, while the sum is 28.

Adding to 4242250004221 its reverse (1224000522424), we get a palindrome (5466250526645).

The spelling of 4242250004221 in words is "four trillion, two hundred forty-two billion, two hundred fifty million, four thousand, two hundred twenty-one".